Lancer Tactical ADG TDC Hop-Up Unit

The ADG TDC Hop-Up Unit is a drop-in replacement for the stock hop-up chamber in Lancer Tactical's ADG-series gas blowback rifles. If you're running an ADG3, ADG4, or ADG5 and the original chamber is shifted, leaking, or just not holding its setting the way it used to, this is the OEM part that goes back in.

What "TDC" means. The TDC — Twin Directional Channel — design is Lancer Tactical's rotary hop-up chamber. Instead of the older lever-and-wheel style, which presses on the bucking through a single contact point, the TDC applies adjustment pressure through a dial and a wider, more even contact patch. The setting holds better shot to shot, and when you do turn the knob to adjust for BB weight or ambient conditions, you're actually moving the hop, not just shifting things around.

Compatibility. The ADG TDC unit is for Lancer Tactical ADG-series GBBRs built on the Tokyo Marui MWS-spec platform. It fits ADG3, ADG4, and ADG5 rifles. If you're running a non-ADG Lancer Tactical gas gun or a different brand entirely, check the chamber spec first — this is not universal.

What it isn't. This is a hop-up chamber only. It does not include bucking, nub, or any other internal parts beyond the unit itself. If your bucking is worn, you'll want a replacement from Maple Leaf or similar at the same time.